Mobile telephone handset



FIG. 1 is a front plan view of a mobile telephone handset showing my new design;

FIG. 2 is a back plan view;

FIG. 3 is a right side elevational view;

FIG. 4 is a left side elevational view;

FIG. 5 is a top plan view; and,

FIG. 6 is a bottom plan view thereof.

The broken line showings in FIGS. 1 and 3-6 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a mobile telephone handset, as shown and described. 